Add alignment and fill examples in 1.2 Formatted print
Add alignment and fill examples in 1.2 Formatted print

chriskrycho/rust-by-example,aakloxu/rust-by-example-cn,jinyuanxie/rust-by-example-cn,realcr/rust-by-example,mdinger/rust-by-example,rust-lang-cn/rust-by-example-cn,realcr/rust-by-example,mdinger/rust-by-example,aakloxu/rust-by-example-cn,jinyuanxie/rust-by-example-cn,nodakai/rust-by-example,nodakai/rust-by-example,chriskrycho/rust-by-example,rust-lang-cn/rust-by-example-cn